酷酷的mapv

做城市热力图的时候无意浏览到mapv强大的功能。比如地图上路线的汇聚效果，如下

  1 <!DOCTYPE html>
  2 <html>
  3 <head>
  4     <meta charset="UTF-8">
  5     <title></title>
  6 
  7     <style type="text/css">
  8         html, body {
  9            
 10             overflow: hidden;
 11         }
 12 
 13         #map {
 14             width: 500px;
 15             height: 500px;
 16            margin:0 auto;
 17         }
 18     </style>
 19 </head>
 20 <body>
 21 
 22     <div id="map"></div>
 23     <canvas id="canvas"></canvas>
 24 
 25     <script type="text/javascript" src="http://api.map.baidu.com/api?v=2.0&ak=1XjLLEhZhQNUzd93EjU5nOGQ"></script>
 26     <script type="text/javascript" src="../build/mapv.js"></script>
 27 
 28     <script type="text/javascript">
 29 
 30         // 百度地图API功能
 31         var map = new BMap.Map("map", {
 32             enableMapClick: false
 33         });    // 创建Map实例
 34         map.centerAndZoom(new BMap.Point(108.154518,36.643346), 5);  // 初始化地图,设置中心点坐标和地图级别
 35         map.enableScrollWheelZoom(true); // 开启鼠标滚轮缩放
 36 
 37         // 地图自定义样式
 38         map.setMapStyle({
 39             styleJson: [{
 40                 "featureType": "water",
 41                 "elementType": "all",
 42                 "stylers": {
 43                     "color": "#044161"
 44                 }
 45             }, {
 46                 "featureType": "land",
 47                 "elementType": "all",
 48                 "stylers": {
 49                     "color": "#091934"
 50                 }
 51             }, {
 52                 "featureType": "boundary",
 53                 "elementType": "geometry",
 54                 "stylers": {
 55                     "color": "#064f85"
 56                 }
 57             }, {
 58                 "featureType": "railway",
 59                 "elementType": "all",
 60                 "stylers": {
 61                     "visibility": "off"
 62                 }
 63             }, {
 64                 "featureType": "highway",
 65                 "elementType": "geometry",
 66                 "stylers": {
 67                     "color": "#004981"
 68                 }
 69             }, {
 70                 "featureType": "highway",
 71                 "elementType": "geometry.fill",
 72                 "stylers": {
 73                     "color": "#005b96",
 74                     "lightness": 1
 75                 }
 76             }, {
 77                 "featureType": "highway",
 78                 "elementType": "labels",
 79                 "stylers": {
 80                     "visibility": "on"
 81                 }
 82             }, {
 83                 "featureType": "arterial",
 84                 "elementType": "geometry",
 85                 "stylers": {
 86                     "color": "#004981",
 87                     "lightness": -39
 88                 }
 89             }, {
 90                 "featureType": "arterial",
 91                 "elementType": "geometry.fill",
 92                 "stylers": {
 93                     "color": "#00508b"
 94                 }
 95             }, {
 96                 "featureType": "poi",
 97                 "elementType": "all",
 98                 "stylers": {
 99                     "visibility": "off"
100                 }
101             }, {
102                 "featureType": "green",
103                 "elementType": "all",
104                 "stylers": {
105                     "color": "#056197",
106                     "visibility": "off"
107                 }
108             }, {
109                 "featureType": "subway",
110                 "elementType": "all",
111                 "stylers": {
112                     "visibility": "off"
113                 }
114             }, {
115                 "featureType": "manmade",
116                 "elementType": "all",
117                 "stylers": {
118                     "visibility": "off"
119                 }
120             }, {
121                 "featureType": "local",
122                 "elementType": "all",
123                 "stylers": {
124                     "visibility": "off"
125                 }
126             }, {
127                 "featureType": "arterial",
128                 "elementType": "labels",
129                 "stylers": {
130                     "visibility": "off"
131                 }
132             }, {
133                 "featureType": "boundary",
134                 "elementType": "geometry.fill",
135                 "stylers": {
136                     "color": "#029fd4"
137                 }
138             }, {
139                 "featureType": "building",
140                 "elementType": "all",
141                 "stylers": {
142                     "color": "#1a5787"
143                 }
144             }, {
145                 "featureType": "label",
146                 "elementType": "all",
147                 "stylers": {
148                     "visibility": "off"
149                 }
150             }, {
151                 "featureType": "poi",
152                 "elementType": "labels.text.fill",
153                 "stylers": {
154                     "color": "#ffffff"
155                 }
156             }, {
157                 "featureType": "poi",
158                 "elementType": "labels.text.stroke",
159                 "stylers": {
160                     "color": "#1e1c1c"
161                 }
162             }, {
163                 "featureType": "administrative",
164                 "elementType": "labels",
165                 "stylers": {
166                     "visibility": "off"
167                 }
168             },{
169                 "featureType": "road",
170                 "elementType": "labels",
171                 "stylers": {
172                     "visibility": "off"
173                 }
174             }]
175         });
176 
177         var randomCount = 500;
178 
179         var node_data = {
180             "0":{"x":108.154518, "y":36.643346},
181             "1":{"x":121.485124, "y":31.235317},
182         };
183 
184         var edge_data = [
185             {"source":"1", "target":"0"}
186         ]
187 
188         var citys = ["北京","天津","上海","重庆","石家庄","太原","呼和浩特","哈尔滨","长春","沈阳","济南","南京","合肥","杭州","南昌","福州","郑州","武汉","长沙","广州","南宁","西安","银川","兰州","西宁","乌鲁木齐","成都","贵阳","昆明","拉萨","海口"];
189 
190         // 构造数据
191         for (var i = 1; i < randomCount; i++) {
192             var cityCenter = mapv.utilCityCenter.getCenterByCityName(citys[parseInt(Math.random() * citys.length)]);
193             node_data[i] = {
194                 x: cityCenter.lng - 5 + Math.random() * 10,
195                 y: cityCenter.lat - 5 + Math.random() * 10,
196             }
197             edge_data.push(
198                 {"source": ~~(i * Math.random()), "target": '0'}
199             );
200         }
201 
202         var fbundling = mapv.utilForceEdgeBundling()
203                         .nodes(node_data)
204                         .edges(edge_data);
205 
206         var results = fbundling();  
207 
208         var data = [];
209         var timeData = [];
210 
211         for (var i = 0; i < results.length; i++) {
212             var line = results[i];
213             var coordinates = [];
214             for (var j = 0; j < line.length; j++) {
215                 coordinates.push([line[j].x, line[j].y]);
216                 timeData.push({
217                     geometry: {
218                         type: 'Point',
219                         coordinates: [line[j].x, line[j].y]
220                     },
221                     count: 1,
222                     time: j
223                 });
224             }
225             data.push({
226                 geometry: {
227                     type: 'LineString',
228                     coordinates: coordinates
229                 }
230             });
231         }
232 
233         var dataSet = new mapv.DataSet(data);
234 
235         var options = {
236             strokeStyle: 'rgba(55, 50, 250, 0.3)',
237             globalCompositeOperation: 'lighter',
238             shadowColor: 'rgba(55, 50, 250, 0.5)',
239             shadowBlur: 10,
240             methods: {
241                 click: function (item) {
242                 }
243             },
244             lineWidth: 1.0,
245             draw: 'simple'
246         }
247 
248         var mapvLayer = new mapv.baiduMapLayer(map, dataSet, options);
249 
250         var dataSet = new mapv.DataSet(timeData);
251 
252         var options = {
253             fillStyle: 'rgba(255, 250, 250, 0.9)',
254             globalCompositeOperation: 'lighter',
255             size: 1.5,
256             animation: {
257                 type: 'time',
258                 steps: 100,
259                 trails: 1,
260                 duration: 5
261             },
262             draw: 'simple'
263         }
264 
265         var mapvLayer = new mapv.baiduMapLayer(map, dataSet, options);
266 
267     </script>
268     
269 </body>
270 </html>

View Code

 1 <!DOCTYPE html>
 2 <html>
 3 <head>
 4     <meta charset="UTF-8">
 5     <title></title>
 6 
 7     <style type="text/css">
 8         html, body {
 9             width: 100%;
10             height: 100%;
11             margin: 0;
12             padding: 0;
13             overflow: hidden;
14         }
15 
16         #map {
17             width: 500px;
18             height: 500px;
19             margin: 0 auto;
20         }
21     </style>
22 </head>
23 <body>
24 
25     <div id="map"></div>
26     <canvas id="canvas"></canvas>
27 
28     <script type="text/javascript" src="http://api.map.baidu.com/api?v=2.0&ak=1XjLLEhZhQNUzd93EjU5nOGQ"></script>
29     <script type="text/javascript" src="../build/mapv.js"></script>
30 
31     <script type="text/javascript">
32 
33         // 百度地图API功能
34         var map = new BMap.Map("map", {
35             enableMapClick: false
36         });    // 创建Map实例
37         map.centerAndZoom(new BMap.Point(105.403119, 38.028658), 6);  // 初始化地图,设置中心点坐标和地图级别
38         map.enableScrollWheelZoom(true); // 开启鼠标滚轮缩放
39 
40         map.setMapStyle({
41             style: 'midnight'
42         });
43 
44         var randomCount = 1000;
45 
46         var data = [];
47 
48         var citys = ["北京","天津","上海","重庆","石家庄","太原","呼和浩特","哈尔滨","长春","沈阳","济南","南京","合肥","杭州","南昌","福州","郑州","武汉","长沙","广州","南宁","西安","银川","兰州","西宁","乌鲁木齐","成都","贵阳","昆明","拉萨","海口"];
49 
50         // 构造数据
51         while (randomCount--) {
52             var cityCenter = mapv.utilCityCenter.getCenterByCityName(citys[parseInt(Math.random() * citys.length)]);
53             data.push({
54                 geometry: {
55                     type: 'Point',
56                     coordinates: [cityCenter.lng - 2 + Math.random() * 4, cityCenter.lat - 2 + Math.random() * 4]
57                 },
58                 count: 30 * Math.random(),
59                 time: 100 * Math.random()
60             });
61         }
62 
63         var dataSet = new mapv.DataSet(data);
64 
65         var options = {
66             size: 13,
67             gradient: { 0.25: "rgb(0,0,255)", 0.55: "rgb(0,255,0)", 0.85: "yellow", 1.0: "rgb(255,0,0)"},
68             max: 60,
69             animation: {
70                 type: 'time',
71                 stepsRange: {
72                     start: 0,
73                     end: 100
74                 },
75                 steps: 100,
76                 trails: 10,
77                 duration: 5,
78             },
79             draw: 'heatmap'
80         }
81 
82         var mapvLayer = new mapv.baiduMapLayer(map, dataSet, options);
83     </script>
84     
85 </body>
86 </html>

View Code

 1 <!DOCTYPE html>
 2 <html>
 3 
 4 <head>
 5     <meta charset="UTF-8">
 6     <title></title>
 7 
 8     <style type="text/css">
 9         #canvas {
10             border: 5px dotted red;
11             width: 800px;
12             height: 800px;
13         }
14     </style>
15 </head>
16 
17 <body>
18 
19     <div id="canvas"></div>
20     <!-- data -->
21     <script type="text/javascript" src="data/3d-simple.js"></script>
22     <!-- library -->
23     <script type="text/javascript" src="js/three.min.js"></script>
24     <script type="text/javascript" src="js/OrbitControls.js"></script>
25     <script type="text/javascript" src="../build/mapv.js"></script>
26     <script type="text/javascript">
27         var canvas = document.querySelector('#canvas');
28         var map = new mapv.x(canvas, {
29             center: {
30                 lng: 105.403119,
31                 lat: 38.028658
32             },
33             grid: {
34                 size: 1,
35             }
36         });
37     </script>
38 
39 </body>
40 
41 </html>

View Code

相关阅读:
Cannot set property 'branchdata' of undefined
关闭Vue Eslint语法检查
 Webpack前世今生
 SpringCloud 之 Netflix Hystrix 服务监控
 Spring Cloud 之 Netflix Hystrix 服务容错
 Java设计模式之建造者模式（Builder Pattern）
Java设计模式之工厂模式（Factory Pattern）
数据库表的字段有默认值，如何修改或者去掉这个默认值
 前端基础进阶（十五）：详解 ES6 Modules
JS基础知识题（中）作用域、闭包
原文地址：https://www.cnblogs.com/cyppi/p/6117694.html